PCI: revise VPD access interface

Change PCI VPD API which was only used by sysfs to something usable
in drivers.
   * move iteration over multiple words to the low level
   * use conventional types for arguments
   * add exportable wrapper

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 65deed8bfc0..211fd418f48 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -56,14 +56,14 @@ extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
 extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
 
 struct pci_vpd_ops {
-        int (*read)(struct pci_dev *dev, int pos, int size, char *buf);
-        int (*write)(struct pci_dev *dev, int pos, int size, const char *buf);
+        ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
+        ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
         void (*release)(struct pci_dev *dev);
 };
 
 struct pci_vpd {
         unsigned int len;
-        struct pci_vpd_ops *ops;
+        const struct pci_vpd_ops *ops;
         struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
 };